Damper.



` PATENTED MAR. 14, 1905.

P. FAUTE.

DAMPBR. APPLIOATION FILED JUNE 9. 1904.

wit/Leu5@ l unnpflm No. 784,99*?. Patented March i4, 1905.

UNITED STATES PATENT OEEICE.

PHILP FAUTH, OF WASHTNGTON, DISTRICT OF COLUMBA.

DAlVlPER.

SPECIFICATION forming part of Letters Patent No. 784,997, dated March l14;, 1905. Application filed June 9, 1904:. Serial No. 211,868.

T @ZZ 1071/0101/ il? Hwy 001%00771# On the outer surface of the duct a plate or Be it known that l, PHILTEFAUTH, a citizen disk 2 is securely riveted, and this has a cenof the United States, and a resident of the city tral opening 3 in line with a corresponding of Washington, in the District of Columbia, opening through the front and rear of the Y have inventedanew and useful Improvement duct, and this serves as a bearing for the 55 in Dampers, of which the following is a specidamper-axis. The hole 3 of the disk or plate iication. is screw-threaded. The numeral 4 indicates My invention relates to an improvement in adamper-lever. This is preferably L-shaped, dampers for hot-air, Ventilating, and smoke comprising a shank at one end and a handle IO ducts; and an object of the invention is to at the other with an intermediate screw- 60 provide means for locking the damper at vathreaded portion 5. The shank is angular rious positions. and adapted to enter and fit the angular socket With this object in view my invention con- 1 of the damper at one end thereof, and the sists in a damper-lever having a screw-thread, y screw-threads 5 turn in the threads of the hole I5 a damper connected with the lever andfitted or opening 3. This shank may extend en- 6 5 in the duct in connection with a locking-nut tirely through the duct, but preferably is j mounted on the threaded portion of the lever madein two sections, a short section at the and adapted to be turned thereon against the opposite end being sufficient to support the outer surface of the duct, or a disk or plate damper at that point. When thus construct- 2O thereon, whereby to lock the damper securely ed, if the screw is turned far enough it will 70 in place. force the damper against the opposite side of `My invention further consists in certain the pipe and hold it there by frictional connovel features of construction and comhinatact; but as a means for positively locking the tions of parts, which will be hereinafter dedamper in its various positionsfthat is, open '25 scribed, and pointed out in the claims. or closed or in any intermediate position-a 75 Tn the accompanying drawings, Figure 1 is locking-nut 6 is mounted on the threads of a sectional view through the air-duct, showthe damper-lever. This nut is preferably ing the damper and damper-lever in plan with provided with a handle 7, forming an inteparts in section. Fig. 2 is a sectional view gralV part thereof whereby to manipulate it,

through the damper. Fig. 3 is a view of the thus making it unnecessary to apply awrench 8O face plate or disk. Fig. 4C is adetached View or other tool to the accomplishment of the of the locking-nut and lever;. and Fig. 5 is a purpose. With this construction when it is slightly-modified form, showing the applica- 'necessary to turn the damper the nut is first f T tion of the invention to a round duct. unscrewed away from the disk or plate 2, the

A represents 'a duct for hot air, smoke, or handle is grasped, and the damper turned 85 Ventilating purposes--sueh, for instance, as is to the position desired, whereupon the lockcommonly used for supplying fresh air to ing-nut is screwed up tight against the plate, furnaces. and the damper is in that way securely locked B is the damper, conforming `in shape to in place against the possibility of turning.

40 the general outline of the duct, whether it be With a damper of this sort no sliding later- 90 of rectangular form, as shown in Fig. l, or ally across the duct is required, as heretoround, as shown in Fig. 5, and substantially fore, and consequently when the duct is closed fitting the inner walls thereof. air cannot pass, whereas in constructions here- The damper may bemade in various ways tofore in which sufficient play was necessary of sheet metal-foi` instance, as shown in Fig. between the damper and duct to allow for 95 2, in two parts riveted together and forming locking and unlocking the damper more or together the angular socket -1 through the less air could always pass even when the damcenter. Other methods of construction might per was closed. In my present invention the be equally advantageous, although this is a damper can be adjusted to a nicety to regufeasible form.

late the infiuX of air, and this adjustment is practically without limitation, it not being confined to two or three different positions.

act construction herein set forth; but,

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is*

1. The combination' with plate on one surface thereof ed orifice, and a damper fitted to the pipe or duct and provided With socket in one end, of thread which screws into the the stem into the socket when turned and whereby the damper may be forced against the opposite side of the pipe.

2. The combination witha ed orifice, and a damper fitted to the pipe or duct and provided with a socket in one end, of

' a thread which against turning. A

3. The combination with a pipe or duct, a plate on one surface thereofl having a threaded orifice, and a damper fitted to the pipe or duct and provided with a socket in one end, of

threaded orifice in the plate the stem into the socket when turned and to hold the stem against endwise movement when ot turne set against turning.

4. The combination with plate on one surface thereof having a threaded orifice, and a damper fitted to the pipe or duct and provided with an angular socket in one end, of a stem having an angular end which enters the angular socket and a thread which a pipe or duct, a

and acts in opposition thereto to lock the darnper wherever set against turning.

5. The combination Witha pipe or duct, and a damper fitted therein, of a stem secured to t ie damper, said stem having a .threaded port0 the pipe or duct and plate and in conjunction therewith locks the damper against turning, anda handle on the stem by which it is held when the nut is turned to lock the damper.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

PHILIP FAUTH Witnesses:

HERBERT C. EMERY, VERNON E. HoDGEs. 

